diff --git a/samgeo/__init__.py b/samgeo/__init__.py
index 79e71b8c..2167c53c 100644
--- a/samgeo/__init__.py
+++ b/samgeo/__init__.py
@@ -2,7 +2,7 @@
 
 __author__ = """Qiusheng Wu"""
 __email__ = "giswqs@gmail.com"
-__version__ = "0.8.5"
+__version__ = '0.8.5'
 
 
 from .samgeo import *